package day11.day12;

/**
 * @author oldliu
 * @since 1.0
 */
public class UTST3Test {
    public static void main(String[] args) {
        Usb3 u=new YidongYinPan();
        u.plugin();
        u.work();
        u.highSpeedTransfer();//???
        u.unuplug();
    }
}
